Leichter Auftaktsieg: Hanfmann auf Sardinien im Achtelfinale
KARLSRUHE, GERMANY - SEPTEMBER 16: Yannick Hanfmann of Germany in action during the match against Dustin Brown of Germany during the Tennis Team Challenge on September 16, 2020 in Karlsruhe, Germany. (Photo by Matthias Hangst/Getty Images)